PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-18:12:50
G01     96.1           29.6                7.9 +/-    1.02      13.9 +/-    1.02  0.050 / 0.050
G07     121.3          44.0                9.8 +/-    1.20      13.4 +/-    1.20  0.040 / 0.060
G08     41.7           12.2                7.7 +/-    2.59      20.6 +/-    2.59  0.040 / 0.070
G11     74.2           41.7                9.5 +/-    0.63      13.4 +/-    0.63  0.040 / 0.050
G13     300.2          34.8               10.1 +/-    1.81      16.1 +/-    1.81  0.050 / 0.080
G17     209.8          47.7               12.5 +/-    1.32      16.2 +/-    1.32  0.050 / 0.090
G18     67.9           23.9                8.6 +/-    1.19      17.2 +/-    1.19  0.120 / 0.150
G19     211.5          22.4               11.7 +/-    1.09      24.2 +/-    1.09  0.180 / 0.190
G28     327.2          61.0                9.1 +/-    0.87      10.3 +/-    0.87  0.110 / 0.160
G30     88.2           77.4               10.3 +/-    0.63      10.6 +/-    0.63  0.100 / 0.180